Baked Shepherd’s Pie with Garlic-Mashed Potatoes
A comforting layered casserole featuring savory ground beef and vegetables beneath a fluffy garlic-infused mashed potato topping. This british-inspired beef ready in about 60 minutes pairs olive oil, ground beef, medium, diced yellow onion for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 480 calories and feeds 6, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart.
Ingredients
- 2 tbsp olive oil
- 1 lb ground beef
- 1 medium, diced yellow onion
- 2 medium, diced carrots
- 1 cup frozen peas
- 4, minced garlic cloves
- 2 tbsp tomato paste
- 1 cup beef broth
- 1 tbsp Worcestershire sauce
- 2 lbs, peeled and chopped russet potatoes
- 4 tbsp unsalted butter
- 1/2 cup whole milk
- 1 tsp, divided salt
- 1/2 tsp, divided black pepper
Instructions
- Step 1: Preheat oven to 400°F. Heat 2 tbsp olive oil in a large skillet over medium-high heat. Add 1 diced yellow onion and 2 diced carrots, cooking for 5 minutes until softened.
- Step 2: Add 1 lb ground beef to the skillet, breaking it up with a spatula. Cook for 6-8 minutes until browned and no pink remains.
- Step 3: Stir in 4 minced garlic cloves and 2 tbsp tomato paste, cooking for 1 minute until fragrant.
- Step 4: Pour in 1 cup beef broth and 1 tbsp Worcestershire sauce, then add 1 cup frozen peas. Simmer for 5 minutes until slightly thickened. Season with 1/2 tsp salt and 1/4 tsp black pepper.
- Step 5: Meanwhile, place 2 lbs peeled and chopped russet potatoes into a large pot of salted water (1 tsp salt). Bring to a boil and cook for 15 minutes until tender.
- Step 6: Drain potatoes and return to pot. Add 4 tbsp unsalted butter, 1/2 cup whole milk, and 1/2 tsp black pepper. Mash until smooth and creamy.
- Step 7: Transfer the beef mixture into a 9x13-inch baking dish, spreading evenly. Spoon the mashed potatoes on top and smooth with a spatula.
- Step 8: Bake for 20-25 minutes until the top is golden and edges are bubbling. Let rest for 5 minutes before serving.
Frequently asked questions
How long does Baked Shepherd’s Pie with Garlic-Mashed Potatoes take to make?
Total time is about 60 minutes (20 min prep + 40 min cook). Most home cooks find this fits comfortably into a weeknight; double the batch on Sunday for two dinners.
How do I store leftover Baked Shepherd’s Pie with Garlic-Mashed Potatoes?
Cool to room temperature within 2 hours, then store in an airtight container in the fridge for up to 4 days. Reheat covered in a 350°F oven for 10-12 minutes, or microwave at 70% power in 60-second bursts to keep olive oil from drying out.
Can I substitute ingredients in Baked Shepherd’s Pie with Garlic-Mashed Potatoes?
Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.
How do I scale Baked Shepherd’s Pie with Garlic-Mashed Potatoes for a different number of people?
The recipe is written for 6 servings. Multiply each ingredient by (your serving target / 6). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.
What goes well with Baked Shepherd’s Pie with Garlic-Mashed Potatoes?
British beef like this pair well with a simple grain (rice, couscous, or crusty bread), a quick salad with acid (lemon vinaigrette, pickled onions), and a pan sauce or yogurt-based dip. Tap "Plan a meal with the AI" to get specific side suggestions.
